Cup with cover

The image shows a cup with cover. The cover is on the left side, upside down, with a circular shape and a flat bottom. The cover has a pattern etched into it, with a circle in the center featuring the numbers "442." The cup is on the right side, right side up, with a wide mouth and a narrow base. The cup has a similar etched pattern and displays the number "544." Both items appear to be made of a white material, possibly ceramic or glass. The background of the image is a plain gray color. The cup and cover are sitting on a flat surface. The image is in black and white.